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SpecialTalkPage
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1
1<?php
2/**
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16 * http://www.gnu.org/copyleft/gpl.html
17 *
18 * @file
19 */
20
21namespace MediaWiki\Specials\Redirects;
22
23use MediaWiki\Config\Config;
24use MediaWiki\HTMLForm\HTMLForm;
25use MediaWiki\MainConfigNames;
26use MediaWiki\SpecialPage\FormSpecialPage;
27use MediaWiki\Status\Status;
28use MediaWiki\Title\MalformedTitleException;
29use MediaWiki\Title\Title;
30use MediaWiki\Title\TitleParser;
31
32/**
33 * Redirect to the talk page of a given page.
34 *
35 * @ingroup SpecialPage
36 */
37class SpecialTalkPage extends FormSpecialPage {
38
39    private Config $config;
40    private TitleParser $titleParser;
41
42    public function __construct( Config $config, TitleParser $titleParser ) {
43        parent::__construct( 'TalkPage' );
44        $this->config = $config;
45        $this->titleParser = $titleParser;
46    }
47
48    protected function getFormFields() {
49        return [
50            'target' => [
51                'type' => 'title',
52                'name' => 'target',
53                'label-message' => 'special-talkpage-target',
54                'default' => $this->par,
55            ],
56        ];
57    }
58
59    protected function alterForm( HTMLForm $form ) {
60        if ( $this->par ) { // immediately submit with subpage value
61            $form->setMethod( 'get' );
62        }
63        $form->setSubmitTextMsg( 'special-talkpage-submit' );
64    }
65
66    public function onSubmit( array $formData ) {
67        $target = $formData['target'];
68        try {
69            $title = $this->titleParser->parseTitle( $target );
70        } catch ( MalformedTitleException $e ) {
71            return Status::newFatal( $e->getMessageObject() );
72        }
73        $title = Title::newFromLinkTarget( $title );
74        $talk = $title->getTalkPageIfDefined();
75        if ( $talk === null ) {
76            return Status::newFatal( 'title-invalid-talk-namespace' );
77        }
78
79        // HTTP 302: Found; cache for the Parser Cache length, as an appropriate long time
80        $this->getOutput()->redirect( $talk->getFullUrlForRedirect(), '302' );
81        $this->getOutput()->enableClientCache();
82        $this->getOutput()->setCdnMaxage(
83            $this->config->get( MainConfigNames::ParserCacheExpireTime )
84        );
85        return true;
86    }
87
88    protected function getDisplayFormat() {
89        return 'ooui';
90    }
91
92    public function requiresWrite() {
93        return false;
94    }
95
96    public function requiresUnblock() {
97        return false;
98    }
99
100    public function isListed() {
101        return false;
102    }
103
104    protected function getMessagePrefix() {
105        return 'special-talkpage';
106    }
107
108    public function getDescription() {
109        // "talkpage" is already taken by CologneBlue
110        return $this->msg( 'special-talkpage' );
111    }
112
113}